BANTAM BANTAM

Product Overview

The ROSS Controls is a Bantam FRL bracket mounting screw kit designed specifically for securing modular ROSS Bantam Series filter/regulator/lubricator (FRL) units into two-unit or three-unit assemblies. The kit contains two long screws that extend through end plates and thread into adjacent Bantam modular units, creating a rigid, leak-free structural connection between components.

Bantam Series modular units rely on end plates secured with screws to hold pipe or tubing ports in place and to serve as mounting brackets. Short screws (sold separately as 858K77) are used when a single Bantam unit is installed; long screws from the series (859K77) are required whenever two or more Bantam units are combined into a single FRL assembly.

The Series long screw kit eliminates the need to source hardware separately for multi-unit Bantam configurations. Correct hardware selection is critical: using short screws in a multi-unit assembly results in insufficient thread engagement, reduced structural integrity, and potential air leakage at the modular interface. The 859K77 kit ensures full thread engagement through all mated end plates.

Design engineers specifying Bantam Series FRL combinations for pneumatic systems with space constraints will find the series kit the correct accessory choice for any assembly using two or three Bantam units in series, whether configured as filter only, regulator only, lubricator only, filter-regulator, regulator-lubricator, or full FRL combinations.

Key Engineering Features

• Long Screws for Multi-Unit Bantam Assemblies - Each 859K77 kit contains two long screws sized to extend fully through end plates and engage threads in the adjacent Bantam unit, providing positive mechanical connection between modules.
• Compatible with All Bantam Modular Units - Works with the complete range of ROSS Bantam Series filters, regulators, lubricators, and integrated filter/regulators for 1/8 and 1/4 inch port sizes.
• End Plate System Integration - Designed to work within the Bantam end plate and screw system (857K77 end plates, 858K77 short screws, 859K77 long screws, 860K77/861K77 O-rings) to complete any modular assembly configuration.
• Correct Hardware for Multi-Unit Safety - Provides the proper hardware for 2-unit and 3-unit combinations to ensure full thread engagement and structural integrity. Prevents the air leakage and module separation that results from using short screws in multi-unit applications.
• Simple Installation - Screws thread directly through end plates into mating Bantam modular units with no special tools, simplifying field assembly and maintenance. Modular design allows addition or removal of FRL components without replacing the entire assembly.
• Compact Bantam Platform Support - Enables the space-efficient Bantam Series platform to reach its full modular potential in 2- and 3-unit combinations, critical for pneumatic panel designs where space is at a premium.

Technical Specifications

General Specifications

Temperature Ratings

The Series hardware kit is compatible with all standard Bantam Series FRL assemblies within the Bantam Series operating temperature range.

Important: Temperature ratings are determined by the Bantam Series FRL units being assembled, not by the bracket hardware. Verify the FRL unit temperature ratings for the target application.

Certifications & Compliance

Typical Applications & Industries

Pneumatic Assembly Tooling and Workcell Air Preparation

• Two-unit Bantam filter-regulator combinations at individual machine tool stations where 1/8 or 1/4 inch supply lines feed pneumatic actuators, requiring correct long screws for structural integrity under vibration.
• Three-unit Bantam FRL combinations (filter, regulator, lubricator) on assembly line pick-and-place tooling where compact size is mandatory and multi-unit stability is critical.
• Replacement or rebuild of existing Bantam multi-unit FRL assemblies during scheduled preventive maintenance, requiring the series to ensure proper hardware is available at service time.

Packaging and Material Handling Systems

• Bantam two-unit filter-regulator assemblies mounted on packaging machine actuator circuits for 1/4 inch port supply lines, where long screws maintain module alignment through continuous vibration cycles.
• Compact FRL assemblies on case erectors, baggers, and labeling machines that use Bantam units to minimize installation footprint while providing full filtration and regulation.
• Air preparation units on conveyor systems where Bantam 2-unit combinations provide precise regulation for pneumatic diverter actuators with limited panel space.

Semiconductor and Electronics Manufacturing

• Bantam multi-unit FRL assemblies on cleanroom pneumatic circuits where the compact Bantam platform minimizes equipment footprint and the series screws ensure leak-free module connections.
• Precision filtration and regulation combinations on test fixture supply lines where Bantam two-unit assemblies maintain stable outlet pressure for consistent actuator force.

Automotive Assembly and Test

• Bantam two-unit filter-regulator installations on robotic end-of-arm tooling supply lines where access is limited and the small Bantam profile is the only viable solution.
• Multi-unit Bantam FRL assemblies in vehicle test cell air preparation systems where multiple Bantam combinations are aligned in banks for space-efficient deployment.
• Replacement hardware kits for fleet maintenance of Bantam FRL assemblies across large automotive assembly facilities to ensure consistent hardware specification.

Ordering and Model Number Configuration

The Series Bantam Bracket Kit consists of a single model number. Order additional complementary kits for end plates, short screws, and O-rings as required for the specific Bantam assembly configuration.

Single Unit (one Bantam module): Use two short screw kits (858K77) and two end plates (857K77).

Two-Unit Combination (two Bantam modules): Use one short screw kit (858K77) and one long screw kit (859K77) plus two end plates (857K77).

Three-Unit Combination (three Bantam modules): Use two long screw kits (859K77) plus two end plates (857K77).

Always order replacement O-rings (860K77 for inlet/mating ports; 861K77 for outlet/mating ports) when reassembling Bantam modular units.

For G (BSPP) thread accessories, consult ROSS Controls for equivalent G-thread compatible Bantam end port options.

Accessories

Bantam End Plate and Screw System

Complete Bantam modular assembly hardware system. Order end plates, short screws, long screws, and O-rings as a kit or individually.

Bantam Pipe and Tube Port Kits

Port kits for connecting Bantam FRL assemblies to supply and downstream piping.

Related Products & Accessories

• Bantam Series Integrated Filter/Regulators - Modular Bantam Series combined filter and regulator units for 1/8 and 1/4 port sizes, flow to 24 scfm. https://www.rosscontrols.com/en/series/62-bantam-series
• 166 Series Miniature Bracket Kit - Panel mounting bracket and panel nut kit (873K77) for Miniature Series FRL units. https://www.rosscontrols.com/en/series/166-miniature
• 172 Series Mid-Size and Full-Size Port Blocks - Female port blocks for connecting mid-size and full-size FRL assemblies to 1/4 to 3/4 inch piping. https://www.rosscontrols.com/en/series/172-mid-size-full-size
• 164 Series Electronically Controlled Drains - Timer-controlled electronic drain valves for automatic condensate removal from FRL filter bowls. https://www.rosscontrols.com/en/series/164-electronically-controlled-drains
• 174 Series Differential Pressure Gauge - Visual filter element condition monitoring gauges for ROSS FRL assemblies. https://www.rosscontrols.com/en/series/174-differential-pressure-gauge

Frequently Asked Questions (FAQ)

Q: What is the difference between short screws (858K77) and long screws (859K77)?

A: Short screws (858K77) are sized to secure end plates on a single standalone Bantam unit, threading into the Bantam module without extending further. Long screws (859K77) are longer and designed to pass completely through one end plate, through the first module, and thread into the next module, mechanically binding two or three Bantam units together into a rigid assembly.

Q: How many screw kits do I need for a three-unit Bantam FRL?

A: Two long screw kits (859K77) are required for a three-unit Bantam assembly, one kit for each inter-module junction. You will also need two end plates (857K77). No short screw kits are required in a three-unit combination.

Q: Can I use the series long screws with Bantam units that have quick-connect tube fittings?

A: Yes. The Series screws are compatible with all Bantam modular units regardless of whether the units use threaded pipe ports or quick-connect tube fitting ports. The screw engagement is at the module body interface, independent of the port configuration.

Q: Do I need to replace the O-rings when disassembling and reassembling Bantam units?

A: Best practice is to replace O-rings (860K77 for inlet/mating ports, 861K77 for outlet/mating ports) whenever Bantam modular units are separated and reconnected. Reusing compressed O-rings can result in inter-module leakage that is difficult to detect without a pressure test.

Q: Are the series long screws available in metric versions?

A: The 859K77 kit is the standard catalog item for Bantam long screws. For metric hardware requirements or special configurations, contact ROSS Controls directly at (800) 438-7677 to discuss available options.

Q: What holds the Bantam modular units together beyond the screws?

A: The O-ring sealed end plate interfaces provide both the pneumatic seal and structural alignment between Bantam modules. The long screws provide the clamping force to compress the O-rings and maintain positive contact between mating surfaces. Both elements are required for a properly assembled multi-unit Bantam FRL.

Q: Can a two-unit Bantam FRL assembly be expanded to three units by adding long screws?

A: Yes, provided the existing assembly used long screws (859K77) for the original two-unit connection. If short screws were incorrectly used, they must be replaced with long screws and the additional module added simultaneously to maintain proper thread engagement throughout the assembly.

Q: Are replacement screws available for field service?

A: Yes. The 859K77 kit (two long screws) is available as a standard catalog item for field replacement. ROSS recommends stocking one kit per Bantam multi-unit assembly as a spare to avoid production delays during maintenance.

Q: What is the maximum number of Bantam units that can be combined?

A: ROSS publishes configurations for single-unit, two-unit, and three-unit Bantam combinations. For assemblies beyond three units, consult ROSS Controls engineering to verify structural and pneumatic suitability of the proposed configuration.

Q: Where can I find dimensional drawings for the Bantam Series?

A: Dimensional drawings for Bantam modular assemblies using the series hardware are included in the ROSS FRL catalog (Form A10120) available at rosscontrols.com. Drawings show assembled dimensions for 2-unit and 3-unit combinations with pipe port and tube fitting options.

Q: Is the 859K77 stocked at ROSS distributors?

A: Yes, the 859K77 Bantam long screw kit is a standard stocked accessory item available through the ROSS Controls distributor network. Contact ROSS at (800) 438-7677 or rosscontrols.com for the nearest stocking distributor.

Q: What lubricant should I use when assembling Bantam modular connections?

A: No thread lubricant is required or recommended on the 859K77 screws. The O-ring seals should be lightly coated with a petroleum-based grease compatible with the O-ring material (Nitrile) to facilitate assembly and ensure proper seating without rolling or pinching the O-ring during tightening.

Installation & Maintenance Guidelines

• Ensure all Bantam module mating faces are clean and free from contamination, burrs, or damage before assembly.
• Install new O-rings (860K77 and 861K77 as applicable) on all mating interfaces; do not reuse compressed O-rings.
• For a two-unit combination: position modules together, install end plates on each open end, insert one long screw (859K77) through each end plate and the first module, threading into the second module.
• For a three-unit combination: use two long screw kits (859K77), one at each end of the assembly, threading through all intermediate modules.
• Tighten screws evenly and snugly; do not overtorque. Over-tightening can crack end plates or deform O-rings.
• After assembly, pressurize the FRL assembly and verify all inter-module connections with leak detection solution before placing in service.
• Orient the assembled Bantam FRL with drains at the lowest point where possible to promote condensate drainage.
• Do not exceed the maximum pressure rating of the assembled Bantam FRL units: 150 psig (10 bar) with polycarbonate bowls.

Warranty & Global Support

ROSS Controls provides a one-year warranty on all products, covering defects in material and workmanship from date of purchase.

Global technical support is available through ROSS offices in the USA (headquarters in Ferndale, Michigan), Canada, Brazil, Germany, France, United Kingdom, India, China, and Japan.

Contact ROSS Controls USA at (800) 438-7677 or visit rosscontrols.com for product configuration, technical support, and distributor locator services.

For the complete Bantam Series FRL accessory catalog, dimensional drawings, and assembly instructions, visit rosscontrols.com or contact ROSS Controls at (800) 438-7677.

Download Catalog: https://www.rosscontrols.com/en/series/165-bantam